Evolution/History
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| artificial selection | selection by humans for breeding of useful traits from the natural variation among different organisms
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| fitness | ability of an organism to survive and reproduce in its environment
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| adaptation | inherited characteristic that increases an organism’s chance of survival
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| survival of the fittest | process by which individuals that are better suited to their environment survive and reproduce most successfully
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| natural selection | process by which individuals that are better suited to their environment survive and reproduce most successfully
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| genetic drift | random change in allele frequencies that occurs in small populations
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| reproductive isolation | separation of species or populations so they cannot interbreed and produce fertile offspring
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| behavioral isolation | form of reproductive isolation in which two populations have differences in courtship rituals or other types of behavior that prevent them from interbreeding
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| geographic isolation | form of reproductive isolation in which two populations are separated physically by geographic barriers such as rivers, mountains, or stretches of water
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| temporal isolation | form of reproductive isolation in which two populations reproduce at different times
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| relative dative | method of determining the age of a fossil by comparing its placement with that of fossils in other layers of rock
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| index fossil | distinctive fossil used to compare the relative ages of fossils
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| radioactive dating | technique in which scientists calculate the age of a sample based upon the amount of remaining isotopes it contains
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| homologous structure | structures that have different mature forms in different organisms but develop from the same embryonic tissues
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| vestigial organ | organ that serves no useful function in an organism
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| gene pool | combined genetic information of all the members of a particular population
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| relative frequency | number of times an allele occurs in a gene pool compared with the number of times other alleles occur
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Created by:
Batterbee
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